Reenforced-concrete column



M. CVETKOVICH.

REENFORCED CONCRETE COLUMN.

APPLICATION FILED APR- 6, I922.

Patented Nov. 21, 1922.

FIG. 3

Patented Nov. 21, 1922.

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Prs r EFICE- MARKO CVETKOVICI-I, OF (HEARD, OHIO;

REENFORCED-CONCRETE COLUMN.

App1ication filed April 6,

Ohio, have invented certain new and useful' Improvements in Reenforced-Concrete COL umns,-of which the following is a specification.

Thisinvention relates to certain new and useful improvements in reenforced concrete columns, particularly adapted in the erectionof buildings, telegraph poles and the like.

The primary object of the invention isto provide a generally simplified andimproved form'of concrete column which is'effectively reenforced and of such construction as to be cheaply and easily manufactured without the requirement'of especially skilled labor.

Another object of the invention is toprovide a reinforcing unit or tubular concrete structure adapted to efficiently serve its function and embodying simplicity and durability of construction.

With the-abovegeneral objects in view the invention consists of the novel combination and arrangement of parts hereinafter more fully described in connection with accompanying drawings, and in which like reference characters designate correspondingparts throughout the several views.

In said drawings Figure 1 is a fragmentary elevational view showing the upper end of a rein'forcingunit constructed in accordance with the present invention,

Figure 2 is a horizontal sectional view through a concrete column reenforced by means of a unit constructed in accordance with the present invention with the form employed for the manufacture of the column indicated in outline by dotted line,

Figure 3 is an enlarged fragmentary sectional view on line IIIIII of Fig. 1,

Figure 4 is a view similar to Figure 3 taken on line IVIV of Figure 1, and

Figure 5 is a fragmentary perspective view drawn on a larger scale illustrating the upper end of one of the angle bars of the reinforcing unit shown in Figure 1.

Referring more in detail to the several views, the reinforcing unit embodies a plurality of vertically disposed angle bars 5 uniformly spaced and arranged in such relation as to be all similarly embedded in the concrete wall of the tubular structure which 1922. Serial No; 550,119.

is to be produced, the arrangement shown beingacircular formation for the production of cylindrical columns. The angle bars, when employed fort-he production of cylindrical columns, have their inner fi'ange'st of arcuate formation seas to snugly, flatly lie against" the outer surface ofthe tubular inner mold or form denoted by dottedlines at '2' in Figureflandwhereby the other. flange of each angle bar is radially directed outwardly as are. This radially projecting flange of each angle bar'is of suchwidth'as to contact throughout its outeredge with the inner surface of the outer form indicated at 9 by dotted lines in Figure 2.

In order tomaintain the angle bars against outward relative displacement and bind the same in their proper relation, the same are associated withthe series of vertically superposed horizontally arranged coil portions 10 of ahelicalmember whichis preferably constructed of suitable length of' wire bent into proper form.

The coil portions 10" are maintainedin proper spaced relationby being seated in aligned notches 11 provided in theoutwardly projecting flanges 8 of'the angle bars 5, which notches are transversely of' the bars and open atthe outer edges of the flanges 8 thereof. The coil portions 10 are of such diameter as to seat against the-inner:

end walls of each notch when'theangle bars are properly spaced'and positioned. l/Vhen thus disposed, the reinforcing unitis'placed' between the forms? and .9 and the concrete 12 is then poured betweentheform's so as to fill all vacancies thereb'etween, the concrete flowing through the notches 11 to form a unit or integral structure in the nature of a column. In order to permit more perfect union of the portions of concrete between the several angle bars, the outwardly projecting flanges 8 of the latter are additionally provided with openings 13 through which the concrete may flow, and these openings are preferably formed by stamping spurs 14 at intervals from the flanges 8 substantially midway between the notches 11 so that the spurs project inwardly in a tangential direction. These spurs are preferably of triangular form although other shapes or spurs will of course serve the purpose. Before the concrete is poured between the forms the angle bars 5 are preferably provided with means for holding the same in their proper spaced relation and these means may consist of a plurality of vertical wires 15, one associated with each angle bar and extending between the flange 8 and the spur 14 of said flange as well as contacting the outer sides of the coil portions 10 as shown clearly in Figures land 2. The wires 15 may be anchored at the ends of the same by being bent around the upper and lower most spurs as at 16.

A very eflicient, simple and durable form of reinforcing unit is thus produced and when the same is employed in conjunction with forms so as to be embedded in the concrete wall 12, a very strong column is had which may be produced at a low cost and with the requirement of no particularly skilled labor.

From the foregoing description, it is believed that the construction and operation as well as the advantages of the present inven tion will be readily understood and appreciated by those skilled in the art;

Minor changes may be made without departing from the spirit and scope of the invention as hereinafter claimed.

Having thus described the what I claim is:

1. A reinforcing unit for tubular concrete structures comprising a series of vertical angle bars arranged in uniformly spaced relation with outwardly directed flanges having a series of notches extending inwardly from the outer edges of the outwardly directed flanges thereof, a helical wire member having its coils seated in the notches of the angle bar flanges so as to be horizontally disposed in superposed relation, and means to retain the angle bars against relative movement, said angle bars being provided with stamped-out spurs directly inwardly at an angle and providing openings through the outwardly directed flanges thereof. a v

2. A reinforcing unit for tubular concrete structures comprising a series of vertical angle bars arranged in uniformly spaced reinvention,

lation with outwardly directed flanges having a series of notches extending inwardly from the outer edges of the outwardly di rected flanges thereof, a helical wire member having its coils seated in the notches of the angle bar flanges so as to be horizontally disposed in superposed relation, and means to retain the angle bars against relative movement, said angle bars being provided with stamped-out spurs directly inwardly at an angle and providing openings through the outwardly directed flanges thereof, said means for holding the angle bars against relative displacement comprising vertical wires, one associated with each angle bar and having its ends anchored to the end spurs of the angle bars and extending between said spurs and the outwardly directed flanges outwardly of and contacting the coils of said wire member.

3. A tubular concrete structure involving a reinforcing unit and a concrete body, the reinforcing unit involving a plurality of circularly disposed angle bars arranged in a vertical position and connected by means of a helical wire member having a series of horizontally arranged superposed coil portions whereby the angle bars are restrained against outward movement, said angle bars including inner flanges flush with the inner surface of the concrete body and radially directed flanges having their outer edges flush with the outer surface of the concrete;

body, the outwardly directed flanges of the angle bars being notched and the coil portions lying in said notches, said outwardly directed flanges being provided with stamped out spurs extending inwardly and vertical wires disposed between the flanges and their spurs and anchored to spaced end spurs in contact with the outer sides of the coil portions for holding the angle bars against relative displacement on the latter.

In testimony whereof I aflix my signature.

MARKO GVETKOVICH. 

